Bertozzi Carolyn R 4

4 · OmniAb, Inc. · Filed Jun 18, 2026

Research Summary

AI-generated summary of this filing

Updated Jun 18, 2026

OmniAb (OABI) Director Carolyn R. Bertozzi Exercises Options, Receives RSUs

What Happened
Carolyn R. Bertozzi, a director of OmniAb, reported multiple derivative transactions on 2026-06-17: two exercise/conversion entries (one acquiring 20,000 derivative shares and one disposing of 20,000 derivative shares) and two award/grant entries acquiring 20,000 and 40,000 derivative-linked units. The filings show $0 cash exchanged for these transactions. Taken together the filing shows 80,000 derivative/RSU-type units acquired and a separate 20,000-share derivative disposal (net +60,000 derivative-linked units).

Key Details

Transaction date: 2026-06-17; Form 4 filed 2026-06-18 (timely).
Reported transactions:
- Exercise/conversion (Code M): 20,000 shares acquired (price N/A).
- Exercise/conversion (Code M): 20,000 shares disposed at $0 (derivative).
- Grant/award (Code A): 20,000 shares acquired at $0 (derivative).
- Grant/award (Code A): 40,000 shares acquired at $0 (derivative).
Net change per filing: +60,000 derivative-linked units (80,000 acquired less 20,000 disposed).
Shares owned after the transactions: not specified in the materials provided.
Footnotes of note:
- F1/F3: RSUs vest on the earlier of the next annual stockholders’ meeting after grant or one year after grant.
- F2: Each RSU equals a contingent right to one share of common stock.
- F4: Stock options vest in full on the earlier of the next annual meeting or one year after grant.
No indication in the filing of a 10b5-1 plan or tax-withholding sale; the reason for the 20,000-share derivative disposal at $0 is not explained in the filing.

Context

These entries appear to be awards/vestings and an exercise/conversion of derivatives rather than open-market purchases or sales by the director. Awards/vestings typically reflect compensation or plan-based conversions and do not necessarily signal a personal buy/sell decision.
The filing shows $0 exchanged for these items; that often occurs for vesting of RSUs or internal conversions but the Form 4 does not specify whether any shares were immediately sold or withheld for taxes.
For retail investors, purchases are generally a stronger signal of insider confidence than routine awards/vestings; this filing documents compensation-related activity and conversions rather than an outright market purchase.

Insider Transaction Report

Form 4

Period: 2026-06-17

OmniAb, Inc.OABI

Bertozzi Carolyn R

Director

Transactions

Exercise/Conversion
Common Stock
[F1][F2]
2026-06-17+20,000→ 113,308 total
Exercise/Conversion
Restricted Stock Units
[F2][F1]
2026-06-17−20,000→ 0 total
→ Common Stock (20,000 underlying)
Award
Restricted Stock Units
[F2][F3]
2026-06-17+20,000→ 20,000 total
→ Common Stock (20,000 underlying)
Award
Stock Option (right to buy)
[F4]
2026-06-17+40,000→ 40,000 total
Exercise: $2.03Exp: 2036-06-17→ Common Stock (40,000 underlying)

Footnotes (4)

[F1]Represents the vesting of an RSU granted on June 17, 2025, which occurs on the earlier of (A) the date of the next annual meeting of the Company's stockholders following the grant date and (B) the first anniversary of the grant date.
[F2]Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.
[F3]The RSUs shall vest in full on the earlier of (A) the date of the next annual meeting of the Company's stockholders following the grant date and (B) the first anniversary of the grant date.
[F4]Each Stock Option shall vest and become exercisable in full on the earlier of (A) the date of the next annual meeting of the Company's stockholders following the grant date and (B) the first anniversary of the date of grant.

Signature

By: /s/ Charles S. Berkman, Attorney-in-Fact For: Carolyn R Bertozzi|2026-06-18

Documents

1 file

4
wk-form4_1781814752.xmlPrimary
FORM 4